package com.example.servletdemo.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;

//@WebFilter(filterName = "asyncFilter",asyncSupported = true, urlPatterns = "/AsyncServlet",dispatcherTypes = {DispatcherType.REQUEST,DispatcherType.ASYNC})
public class AsyncFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        System.out.println("AsyncFilter:init");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        System.out.println("AsyncFilter:doFilter开始");

        filterChain.doFilter(servletRequest,servletResponse);

        System.out.println("AsyncFilter:doFilter结束");
    }

    @Override
    public void destroy() {
        System.out.println("AsyncFilter:destroy");
    }
}
